CHEMISTRY

JAMB 2006 - Question 44

Chemistry 2006 JAMB Past Questions - Question 44: Zinc and carbon rods are used as anode and cathode respectively in a

Choose the correct answers from the options given.
Zinc and carbon rods are used as anode and cathode respectively in a
A:
B:
C:
D:
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Correct Answer

A

Explanation

In a Leclanche cell, the anode is typically made of zinc, while the cathode is made of manganese dioxide. The electrolyte is a paste of ammonium chloride. The Leclanche cell is a type of primary (non-rechargeable) battery commonly used in applications such as flashlights.

In a lead-acid accumulator (lead-acid battery), the anode is made of lead dioxide, the cathode is made of sponge lead, and the electrolyte is a solution of sulfuric acid. Lead-acid batteries are commonly used in vehicles and uninterruptible power supply (UPS) systems.

In a Daniell cell, the anode is made of zinc, and the cathode is made of copper. The electrolyte is a solution of copper sulfate and zinc sulfate. The Daniell cell is a historical voltaic cell and was one of the first practical batteries, but it is not widely used today.

It's important to note that the terminology "voltaic cell" refers to a broad category of electrochemical cells that convert chemical energy into electrical energy. Both the Leclanche cell and the Daniell cell fall under the category of voltaic cells, and the lead-acid accumulator is a type of rechargeable voltaic cell.

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